[cabmandone]

Not a lot of options if you don't want to fire up the pump. I'm a TFP member and the slam method works but you need some testing equipment in order to do it effectively. If you really want it cleaned up, fire up the pump, use the Slam method, get it clear, then keep it going until the water temps get into the 50's and close it. Then if you don't want to fight it in the spring, open it early and you'll enjoy a crystal clear pool all year long.
The trick for closing is get it up to shock level and keep it there for 24 hours. Then close the pool while the chlorine levels are still elevated. Don't let the sun degrade the chlorine. You'll know when you have the algae dead when you can pass an overnight chlorine loss test (OCLT) and combined chloramines are at or below .5 ppm